Well, a few days ago my iBook G4 crashed completely (as in "froze up") and when I restarted, all I got to was the blue screen. I've tried zapping the PRAM, the NVRAM, tried fsck, all to no avail. I can get to open firmware, and I can get to single-user mode, but NOT to safe mode. When I try to archive and install from the DVD, at this point there is nothing in the space provided for destination volume (no image appears). I had some problems (but nothing major) in the past: when starting up, my computer would lag a long time on the grey screen, and this seemed to have something to do with my CD/DVD drive, because the drive would have disappeared before this would happen then would reappear afterwards. Now, at some points since the crash, I have been able to log into my normal user account, but eventually the system again completely freezes up. I also noticed that sometimes when in single user mode, I get an error message about no kernel dependencies (but not always). This typically occurs after the computer has been powered down for a while. At one point, all that I could get to was a screen that said "Darwin/BSD (deep.local) (console)", and a login message. I was able to login from there. Also, when running fsck, I frequently get an error message about "invalid volume file count". And one last thing: I tried to start with verbose mode, and there was another message about "invalid directory item count". I really don't want to wipe this drive if I don't have to, and at this point I'm not even sure how, if I did want to. In my extensive googling to solve this issue, I have read about deleting the kext cache, but couldn't find how to do it, or if it would help. I also read that DiskWarrior is a good bet for disk repair. Is that right? Any help is much appreciated!